<%--在该Jsp中添加一个Attribute到Session中--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>添加 Session Attribute</title>
</head>
<body>
<%
    session.setAttribute("msg", "This is a message store in session.");
%>
</body>
</html>
